KiXtart can run multiple scripts, e.g.
code:
kix32.exe script1.kix script2.kix

Will run both script1.kix and script2.kix. You probably have something extra on your command line.
code:
kix32.exe script.kix somegarbage >output.txt

Will run script.kix successfully, and then complain it cannot "open/find the script" when it tries to execute "somegarbage".